19889541

素因数分解:

$3^2\times 7^3\times {\mathrm{17}}^1\times {\mathrm{379}}^1$

素因数の和:423

約数の個数: 48

約数和(自身を含む): 35568000

約数和(自身を除く): 15678459

約数列:

[1, 3, 7, 9, 17, 21, 49, 51, 63, 119, 147, 153, 343, 357, 379, 441, 833, 1029, 1071, 1137, 2499, 2653, 3087, 3411, 5831, 6443, 7497, 7959, 17493, 18571, 19329, 23877, 45101, 52479, 55713, 57987, 129997, 135303, 167139, 315707, 389991, 405909, 947121, 1169973, 2209949, 2841363, 6629847, 19889541]

約数ペア:

[(1, 19889541), (3, 6629847), (7, 2841363), (9, 2209949), (17, 1169973), (21, 947121), (49, 405909), (51, 389991), (63, 315707), (119, 167139), (147, 135303), (153, 129997), (343, 57987), (357, 55713), (379, 52479), (441, 45101), (833, 23877), (1029, 19329), (1071, 18571), (1137, 17493), (2499, 7959), (2653, 7497), (3087, 6443), (3411, 5831)]